3121112220322 has 4 divisors (see below), whose sum is σ = 4681668330486. Its totient is φ = 1560556110160.

The previous prime is 3121112220299. The next prime is 3121112220323. The reversal of 3121112220322 is 2230222111213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2009586924801 + 1111525295521 = 1417599^2 + 1054289^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3121112220293 and 3121112220302.

It is not an unprimeable number, because it can be changed into a prime (3121112220323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 780278055079 + ... + 780278055082.

Almost surely, 2^{3121112220322} is an apocalyptic number.

3121112220322 is a deficient number, since it is larger than the sum of its proper divisors (1560556110164).

3121112220322 is a wasteful number, since it uses less digits than its factorization.

3121112220322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560556110163.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 3121112220322 its reverse (2230222111213), we get a palindrome (5351334331535).

The spelling of 3121112220322 in words is "three trillion, one hundred twenty-one billion, one hundred twelve million, two hundred twenty thousand, three hundred twenty-two".